I've created an Icelandic Pyramid with changes to TV revenue, prize and sponsorship money, dynamic professional/semi-pro status, player values, transfer preferences and dynamic transfer windows.
I've also made some rather large structural changes that push this into semi-realism:
Shifted the season to August to June rather than the usual April to September as pixel men don't care about sleet or snow.
Squeezed all 78 senior teams into a 4-tier pyramid, with the first 3 divisions containing 20 teams (38 match season) and the 4th containing 18 (36 matches). My personal preference is for more matches & more opportunity for youth to play in rotation.
Removed the pre-season cup competitions as extra league rounds compensate for the lost matches.
Made the shared youth teams extinct so each team now has it's own U19 and U23 team participating in youth leagues that mirror their senior teams competition.
Removed all B team/feeder affiliations from the smaller sides lower down the pyramid so that players aren't shared between teams.
Each team has its own stadium - moved smaller teams to unoccupied stadiums in their city to avoid ground-sharing. Increased the expansion capacities to avoid stadium related debt.
Added awards for first two divisions and their U23/U19 companion leagues.
Holidayed 5+ seasons with no major issues. The sponsorship and TV money might be a tad excessive - but the amounts paid out are tied to club reputation, so as your club (and league) grows they should become competitive with higher reputation leagues. Happy to hear any feedback & make suggested changes.
I've also included club logos and icons for 9 clubs that you won't find in your standard logo pack (I use TCM for reference). I'm currently putting together a kitpack for all 78 teams that I'll post sometime in the near future.
Credit to Hadrian35 from the Second Yellow card discord for their handy guide on optimizing leagues for build-a-nation saves.
Iceland BAN 4-Tier Pyramid.zip